Remove redundant null checks before instanceof checks.

chrome/android/java/src/org/chromium/chrome/browser/externalnav/ExternalNavigationDelegateImpl.java

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.chrome.browser.externalnav;
 
 import android.app.Activity;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.DialogInterface;
@@ skipping 313 matching lines @@
                 == ApplicationState.HAS_RUNNING_ACTIVITIES;
     }
 
     @Override
     public boolean isDocumentMode() {
         return FeatureUtilities.isDocumentMode(mActivity);
     }
 
     private static void logTransactionTooLargeOrRethrow(RuntimeException e, Intent intent) {
         // See http://crbug.com/369574.
-        if (e.getCause() != null && e.getCause() instanceof TransactionTooLargeException) {
+        if (e.getCause() instanceof TransactionTooLargeException) {
             Log.e(TAG, "Could not resolve Activity for intent " + intent.toString(), e);
         } else {
             throw e;
         }
     }
 
     private void closeTab(Tab tab) {
         mActivity.getTabModelSelector().closeTab(tab);
     }
 }